Concrete mold



Mar.6,1923. "1,447,283

5. L. DAVIS CONCRETE MOLD Filed Apr. 25, 1 921 Patented Mar. 6, 1923.

EDW'ARD n DAVIS, I or" sonnnnornrifnnw YonKQ i condemn, MOLD. ii.

Application filed a rh 25, 13.21? 'seri iitoiceases; I

specification.

This invention relates to'improvements'in concrete molds andhas for itsobject to provide an extensible mold."

Another object ofthe invention is to provide amold for building concretestructures so arranged that the mold may: be quickly moved fromplace toplace as the building of the structure proceeds. f 1

Another object of the invention isto provide a concrete mold arranged"to? form [a block upon a structure being-built and'means whereby themold may be removed leaving the block in its permanent position in thestructure. I 1 fl Another object of the invention is-to provide anadjustable mold by means of which sections of concrete may bemolded uponthe structure being built: and the position of the mold quickly changed;upon the. structure.-

With the above andother objects invieW, I have invented a deviceillustratedflin the accompanying drawings "in which Figure l is anelevational view of my improved mold,.

. I Figure 2 is a side elevational View thereof, and V Figure "3 is asection on line 3*3'Figure1.

This invention contemplates the provision of a mold for use inthebuildi'ng' oft-concrete structures and is so formed that theconcreteis'molded in its permanent place ina Wa-ll in the processof'construction, whereby the Wall may be continuously erected by;horizontally shifting the mold I immediately to a new," positionafter'each molded section hasbeen'iormed until a coinplete concrete course hasbeen finished," after Whichthe mold is raised to another similar. courseto be formed upon the course'just completed. ii

In thefollovving' specification and in the views in the drawings likereference char-. acters indicate like parts and 1 indicates a concretestructure being formed bymeans or my improved mold 2, said'mol'd beingformed by a pair of longitudinal horizontally disposed spaced apart Wallmembers 3 and l to which are connected a plurality ture 25.

ofarms Sand 6, respectively, said arms each 7 being the form of a bellcrank, the vertical "portions 7 and-8 of whichextend above the, upperedges 9 and 10 of the members 3 "and 4: and have pivoted thereto the'heads. 11

and I of the right and left screws 13 and. ll fwhich operate in the turnbuckle mend-- bers 15; The; inclined'upper ends 16 and 17 are pivot'edtothe'outer ends of links 18 and 19, the inner ends or Wl'IiCh'aIB pivotedto the heads QOan d 21of the right and left screws 22am 23 operatinginthe turn buckle-members 24 which also serve as o'peratingi ha ndles bymeans vof "which, the mold is releasedfrom its" operative position uponthe concrete course 25 as-the mold-is verti cally lifted-from saidcoursei It will'readily be seen thatlupon raising up of the handles 24,the links 18 and l9aredrawn' toward'on'e another causing the drawinginof the 'e'xten- 'sions 16 and, 1 7 of saidarms5 and 6 causing a pivotalaction of said arms-upon the pivot bolts '26 and '27 which throws 'thelower portion of said arms outwardly from said course 25 automaticallyas the rnold is'littedi Secured to the members 15 by means of the'swivel '28 are straps-2%)- to'which' are'secure'd a central core 30which forms the-space 31 between the Walls-BQ and'33 of saidstrucheightfthantheplates Sande in order that when adjusting themold toanew position the'core be seated uponthetie plates "34;, whereby-themold is rested in position after which the handles 2flare forced down toThis core 30 is 'sli'ghtly lessin;

a horizontal position causingthe vt alllplates 3 and 4,'-Whic'hprojectat their lower ends slightly belo'vv the upper edgex3'5 ofthe formercourse, to-adjust and lock themselves in vertical alignment with saidtormercourse The operation 'o'f-th'e said'turn buckle handles 2st andtheir'link connectionslwith' the upper ends 16 and la' of the arms 5iandjG is limited in its downward movement by the studs 36 andet, whichlimitation-tends to 1001mm mold in its proper positionand icauseit toalign vertically with the adjoining portion of the structure Whichihasalready been molded. The studs 364377 and;38.39s are placed so; as acause the horizontal center lines of the pivotlbolts 26 and-'27 intheturn loo buckle members 15 and the links '18, and'19 Iin'ltheturnibucklemembers 24vto be slightly above the center lines ofthesaid turn buckle members 24 and 15 When the turn buckle handles 2% areforced down to the limit in the act of closing, there securely lockingthe mold. Should the horizontal center lines of the said pivots and thesaid turn buckle members coincide as to levels when the mold is closedit would not be locked and would open with pressure exerted against theinner faces of the side plates 3 and 4. Locating the said studs in themanner described will prevent the deposited concrete from prematurelyopening-themold. The member 30 is slightly wedge shaped in order tofacilitate its withdrawal from the concretemass last molded.

Ina short mold only two sets of the arms 4: and Bare required,- one setadjacent each end of the wall plates 3 and 4.' However, in a longermold, more of these arms and their connections will .be necessary tostiffen the mold to present any tendencyof the plastic concrete causingsaid plates to bulge. The core 30 may be centrally located onthe member15 or it may be located toward one or the other sides of the moldsaccording to where it is desired to hayethe wall sections 32 and 33 ofdifferent widths. It is obvious that if a solid wall is required. thecore 30may be removed from the mold.

The arrangement of the turnbuckles, l5 and 24 is such that the mould maybe readilyadjusted to its narrowest, its widest or to any desiredintermediate thickness for {the wall to be built.

I amaware that prior to my invention concrete molds having cores formakinghollowwalls and with side plates that operate either horizontallyor radially have been made. I therefore do not claim'such a combinationbroadly; but

Having described my invention, that which I claim as new and desire toprocure by Letters Patent is:

1. A mold for concrete consisting of-a set of frame elements with sideplatesattached thereto, upper and intermediate. cross bar members, acentral core fractionally less in height than the said side platespendent from the intermediate cross bar members,

links pivotally connecting the upper cross bar members with theuppermost ends of the said frame elements, whereby depressing the uppercross bar members, when the mold is resting free upon the said centralcore, closes and locks the mold in a predetermined position.

2. A mold for concrete comprising two or more sets of bell crank armswith side plates attached thereto, means whereby said plates may berelatively adjusted, consisting of two turn buckle members, theupperones connected by links to the upper extremity of the said bell crankarms and the buckle members, when the mold is sustained solelyby thesaidcentral core, forces and locks .the mold. intonplace by aitoggle action.4. In a mold for concrete, the'combinae tion of setsef side armswith-side plates at- .thergeltgfloyerhead. wturn. buckle members withpiyotally connected side links jointed. totlie npper extremityjof thesaid side arms, intermediate turn. buckle membersvpiyotally .conneeted'to the said side arms whereby the relative distance between the saidside plates may. be increased or diminished, means. for locking. thesaid mold wl ienclosed, saidmeans consisting of a set of studs solocated in the said side arms that they the. downward meyementlof thesaid turnbuckle.tmembers whenfithe center lines ,of. the.said.turnbuckle. members are fractionaally, below the r center lines ofthe bearings the said side arms as mold Y n uding meld g beards equ ppedwith prish endins beyond the upper -g argins .015 said boards, a sec-.tional cross bar thev ends of which are pivotally connected to theupper ends of the said uprights, ant-l a v t; nnleuckleinterposedbetween certain of said sections for relatiyely nioying theupper ends of said uprights. 6.- A mold including. molding. boardsequipped i h rs'i t e l e y nd the 31119136} .margins of said, boards, asectional cross-bar the ends whichare pivotal lyi connected: to theupper en ds of the said pr ghts a a ueb skle nt ed twee c r a t s dteatime ti e y moying the upper. ends of the said uprights, whereby, inconnection zw it lied-jllsting the intermediateturnbuckle members, theperpsedie ar ty an re; el eei 0f t a molding. boards are secured Intestimony whereof I aflix my signature inethe presence. ,of twowitnesses.

EDWAnn n; 'ngivis, Witnesses:

lfiteGn m JOSEPHINE ,GOHJNS-

